package com.highcom.exception;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class ExceptionResolver implements HandlerExceptionResolver {
    @Override
    public ModelAndView resolveException(HttpServletRequest httpServletRequest,
                                         HttpServletResponse httpServletResponse,
                                         Object o, Exception e) {
        System.out.println("my exception is running ..." + e);
        ModelAndView modelAndView = new ModelAndView();
        if(e instanceof NullPointerException){
            modelAndView.addObject("msg","kongzhizhenyichang");
        }else if (e instanceof ArithmeticException){
            modelAndView.addObject("msg","shuxueyichang");
        }else {
            modelAndView.addObject("msg","weizhiyichang");
        }
        modelAndView.setViewName("error.jsp");
        return modelAndView;
    }
}
